900139287 has 8 divisors (see below), whose sum is σ = 1206217600. Its totient is φ = 597076920.

The previous prime is 900139283. The next prime is 900139321. The reversal of 900139287 is 782931009.

900139287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 900139287 - 2² = 900139283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900139283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 753289 + ... + 754482.

It is an arithmetic number, because the mean of its divisors is an integer number (150777200).

Almost surely, 2^900139287 is an apocalyptic number.

900139287 is a deficient number, since it is larger than the sum of its proper divisors (306078313).

900139287 is a wasteful number, since it uses less digits than its factorization.

900139287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507973.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 900139287 is about 30002.3213601881. The cubic root of 900139287 is about 965.5391894882.

The spelling of 900139287 in words is "nine hundred million, one hundred thirty-nine thousand, two hundred eighty-seven".